Specification Brand : uxcell BulletPoint1 : [Size] - Thread Size: M3; Pitch: 0.5mm; Length: 10mm / 0.39"; Outer Diameter: 4mm / 0.16"; Package Content: 50(+/-2%) x Knurled Insert Nuts BulletPoint2 : [Material] - Made of brass material, high hardness and durable. Provides good mechanical properties with increased corrosion and heat resistance BulletPoint3 : [Feature] - It can be installed into a plastic matrix by ultrasound or heat during the injection molding process. BulletPoint4 : [Easy to Install] - The knurled insert nut has a guide, so no countersink is required. The surface is smooth, firm and even, and easy to install. BulletPoint5 : [Application] - Can be widely used in 3D printing injection molding to achieve tight fixation. Color : light brown Color1 : Silver Color2 : Black CompatibleGrooveDiameter : 1 inches DriveSystem : Spline DriveSystem1 : Internal Hex DriveSystem2 : External Hex ExteriorFinish : Brass ExternallyAssignedProductIdentifier1 : 744337418540 ExternallyAssignedProductIdentifier2 : 0744337418540 ExternallyAssignedProductIdentifier3 : 00008236388497 FinishType : Brass GradeRating : Commercial ItemName : uxcell Knurled Insert Nuts - 50Pcs M3 x 10mm Length x 4mm OD Female Thread Brass Threaded Insert Embedment Nut for 3D Printer ItemPackageDimensions_Height : 13 centimeters ItemPackageDimensions_Length : 0.7 centimeters ItemPackageDimensions_Width : 9.8 centimeters ItemPackageQuantity : 4 ItemShape : Round Or Square Tubing ItemTypeKeyword : hardware-nut-inserts Manufacturer : uxcell Material : Brass MeasurementSystem : Inch MeasurementSystem1 : Metric MeasurementSystem2 : Inch MetalType : Brass ModelNumber : a18110700ux0620 NumberOfItems : 50 NumberOfPieces : 50 PartNumber : a18110700ux0620 ProductDescription : Descriptions: Made of brass material, high hardness and durable. Provides good mechanical properties with increased corrosion and heat resistance The knurled insert nut has a guide, so no countersink is required. The surface is smooth, firm and even, and easy to install. It can be installed into a plastic matrix by ultrasound or heat during the injection molding process. Can be widely used in 3D printing injection molding to achieve tight fixation. Because the outer diameter of the insert is embossed, it forms certain friction and bites force with the brass insert after molding, which can be fixed on the inside and will not fall off. Has a certain torsion and tension.